LTC3557-1 Linear Technology, LTC3557-1 Datasheet - Page 6

• Manufacturer Part Number: LTC3557-1
• Description: USB Power Manager
• Manufacturer: Linear Technology

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LTC3557/LTC3557-1
TYPICAL PERFORMANCE CHARACTERISTICS
6
1200
1100
1000
900
800
700
600
500
400
300
200
100
600
500
100
400
300
200
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
0
–50
–50
0
Input Supply Current vs
Temperature
Input Current Limit vs
Temperature
Battery Current and Voltage vs
Time (LTC3557)
V
R
1450mAhr
CELL
V
R
R
V
1x MODE
BUS
BUS
PROG
CLPROG
BUS
CLPROG
–25
–25
= 5V
= 5V
= 5V
1
= 2k
= 2.1k
= 2k
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
2
TIME (HOUR)
25
25
3
50
50
C/10
4
10x MODE
TERMINATION
75
75
CHRG
5x MODE
1x MODE
V
I
BAT
BAT
SAFETY
TIMER
100
100
5
35571 G01
35571 G04
35571 G07
125
125
6
6
5
1
0
4
3
2
0.06
0.10
0.08
0.04
0.02
300
280
260
240
220
180
160
140
120
100
0
0
–50 –25
–50
4.22
4.20
4.18
4.16
4.14
4.12
4.10
4.06
4.08
Input Supply Current vs
Temperature (Suspend Mode)
Input R
V
I
OUT
BUS
V
0
–25
FLOAT
= 400mA
= 5V
ON
LTC3557
LTC3557-1
200
V
0
0
Load Regulation
TEMPERATURE (°C)
TEMPERATURE (°C)
BUS
vs Temperature
= 5V
25
25
400
I
V
BAT
50
BUS
50
V
(mA)
BUS
= 4.5V
600
75
75
= 5.5V
100
100
V
10x MODE
BUS
T
35571 G02
35571 G05
800
A
= 25°C unless otherwise specifi ed
= 5V
125
125
35571 G08
1000
4.22
4.20
4.18
4.16
4.14
4.12
4.10
4.08
4.06
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
600
500
400
300
200
100
0
0
–50
–50
–50
Battery Drain Current vs
Temperature
Charge Current vs Temperature
(Thermal Regulation)
Battery Regulation (Float)
Voltage vs Temperature
I
V
MODE = 3.8V
BAT
V
10x MODE
R
BAT
BUS
2 BUCKS ENABLED
PROG
–25
–25
–25
= 2mA
= 3.8V
= 5V
= 2k
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
3 BUCKS ENABLED
1 BUCK ENABLED
25
25
25
LTC3557
LTC3557-1
50
50
50
N0 BUCKS ENABLED
75
75
75
100
100
100
35571 G06
35571 G03
35571 G09
35571f
125
125
125